Even though this is not directly aimed at the 'Auto' headlight function, maybe this can be of some help.
There is a Service Bulletin related to the high beam assistant(and also lane departure warning): SI B61 01 10 - This bulletin applies to F01, F02 and F07 models with production dates of 3/3/09-9/21/09, where the customer may feel the sensitivity of these systems is either too high or too low. Based on the complaint the dealer will reprogram/update the KAFAS control unit accordingly.